yttrium - 2024 PLAYTIME - Buzzpoints App

Question

A nearly perfect blue pigment containing this element, indium, and manganese was discovered at Oregon State in 2009. For 10 points each:

[10h] Name this metal that forms the central atom in the unit cells of a lattice consisting of a layered perovskite with a defect. This is the first element in the name of that crystal, which displays high-temperature superconductivity.

ANSWER: yttrium [accept Y; accept yttrium barium copper oxide or YBCO; accept YInMn Blue]

[10m] YInMn Blue’s unusual vibrancy comes from its manganese ions absorbing red and green by forming coordination complexes of this geometry. Axial and equatorial ligands can be exchanged in compounds with this geometry like phosphorus pentafluoride via Berry pseudorotation.

ANSWER: trigonal bipyramidal

[10e] The non-toxicity of YInMn Blue makes it preferable to the possibly carcinogenic blue pigment made with this metal. Iron, nickel, and this transition metal are the most common ferromagnetic elements.

ANSWER: cobalt [accept Co; accept cobalt blue]

<SM, Chemistry>

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Summary


2025 PLAYTIME @ CWRU	12/10/2024	Y	5	8.00	40%	20%	20%
2025 PLAYTIME @ Claremont	12/10/2024	Y	5	22.00	100%	80%	40%
2025 PLAYTIME @ Florida	12/10/2024	Y	3	30.00	100%	100%	100%
2024 PLAYTIME @ Harvard	04/26/2025	Y	4	17.50	75%	50%	50%
2024 PLAYTIME @ JHU	10/26/2024	Y	8	20.00	100%	63%	38%
2025 PLAYTIME @ Northwest	12/10/2024	Y	4	15.00	75%	25%	50%
2025 PLAYTIME Online	04/26/2025	Y	9	20.00	78%	78%	44%
2025 PLAYTIME @ Sheffield	12/10/2024	Y	7	17.14	100%	43%	29%
2024 PLAYTIME @ UBC	10/05/2024	Y	8	22.50	100%	63%	63%
2024 PLAYTIME @ Virginia Tech	07/11/2025	Y	3	13.33	67%	67%	0%
2024 PLAYTIME @ WashU	10/12/2024	Y	6	18.33	83%	100%	0%

Data


Michigan B	Ohio State C	0	0	10	10
Art of Premature Signaling	girl 15 whale i mean they	10	10	10	30
Claremont B	Jason B	10	10	10	30
UCLA A	Caltech	0	0	10	10
UCLA B	UCSB	0	10	10	20
Claremont A	UCSD	0	10	10	20
Ohio State D	Pittsburgh	10	10	10	30
Qin Shi Huang's Immortality Poison	Billy's Bastion	10	10	10	30
Edwin Laundrorat's Long-Lost Man Unclothès Rat Degrosses	Too much from you lately	10	10	10	30
Keeping Up With the Cardassians	Project2025BC: Make Assyria Great Again	10	10	10	30
Harvard	Brown	10	0	10	20
MIT	Belmont	10	10	10	30
RIT	Boston University	0	10	10	20
Michigan D	Ohio State A	0	0	0	0
Lexington	Brandeis	0	0	0	0
NYU B	Georgetown	0	0	10	10
Johns Hopkins A	NYU C	10	10	10	30
Johns Hopkins B	Haverford B	0	0	10	10
Haverford A	Maryland B	10	10	10	30
NYU A	Rutgers	0	10	10	20
Michigan C	Oberlin	0	0	0	0
George Washington	Catholic University of America	0	0	10	10
Maryland A	George Mason B	10	10	10	30
CWRU	George Mason C	0	10	10	20
Ohio State B	Michigan A	0	0	0	0
Arizona State University A	Alberta	10	10	10	30
Arizona State University B	Carleton	0	0	0	0
UW B	South Dakota School of Mines	0	0	10	10
UW A	Washington Connections	10	0	10	20
Quatumvirate	2 Italians, 2 Poles, All Noles	0	0	10	10
Egypt Airlines Haters	Four Generalists in Search of a Power	10	10	10	30
Notre Dame + Epic Games	Free Agents 1	0	10	10	20
Goober Gang	Auburn 2026	0	10	0	10
MSJ	Illinois Orange	0	0	0	0
Mahjonng Masters	mongeese	10	10	10	30
Mike Dukakis Tank Battalion	evil women enjoyers	10	10	10	30
Gruh	Monsieur Hulot's Academic Team	10	10	10	30
we need new names	Trip-Hop Quizzer Tricky	0	10	10	20
Sheffield C	Birmingham	0	0	10	10
Sheffield B	Warwick A	0	0	10	10
Warwick B	Warwick C	10	10	10	30
Imperial A	Cambridge	0	10	10	20
Mac A	UBC	0	0	10	10
Toronto C	McGill A	10	10	10	30
McGill B	Ottawa A	0	10	10	20
Waterloo A	Simon Fraser	10	10	10	30
Toronto A	Toronto B	10	10	10	30
Toronto D	Guelph	0	0	10	10
Waterloo B	Toronto Metropolitan	10	10	10	30
Waterloo C	Toronto E	10	0	10	20
Edinburgh	Imperial B	0	0	10	10
Master and Margaritaville	4 quizbowl pros go Virginia on North Carolina	0	10	10	20
Adrianne Lenker 4 Nobel Lit Prize 2K65	Somehow Paula Deen Returned	0	10	0	10
Even in Blacksburg There I Am	Ashurbanipal’s Drag Race	0	0	10	10
Illinois A	Truman State	0	10	10	20
Iowa State	Illinois B	0	10	10	20
Chicago B	WashU Bulbasaur	0	10	10	20
Chicago B	WashU Bulbasaur	0	10	0	10
Chicago B	Missouri	0	10	10	20
Chicago B	Missouri	0	10	0	10
Chicago B	WashU Bulbasaur	0	10	10	20
Chicago B	WashU Bulbasaur	0	10	0	10
Chicago B	Missouri	0	10	10	20
Chicago B	Missouri	0	10	0	10
WashU Bulbasaur	SIUE	0	10	10	20
Chicago A	WashU Squirtle	0	10	10	20
Lancaster	LSE	10	0	10	20
Sheffield A	Manchester	0	10	10	20